diff --git a/Endpoint/Configuration/Core/Middleware/CustomExceptionHandlerMiddleware.cs b/Endpoint/Configuration/Core/Middleware/CustomExceptionHandlerMiddleware.cs
index f7871fe..5105512 100644
--- a/Endpoint/Configuration/Core/Middleware/CustomExceptionHandlerMiddleware.cs
+++ b/Endpoint/Configuration/Core/Middleware/CustomExceptionHandlerMiddleware.cs
@@ -71,6 +71,7 @@ public class CustomExceptionHandlerMiddleware(RequestDelegate next, ILogger<Cust
                 problemDetails.Status = StatusCodes.Status401Unauthorized;
                 problemDetails.Type = "https://tools.ietf.org/html/rfc9110#section-15.5.2";
                 problemDetails.Title = "Unauthorized access.";
+                problemDetails.Detail = exception.Message;
                 break;
             case ServerUnavailableException unavailableException:
                 problemDetails.Status = StatusCodes.Status503ServiceUnavailable;